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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Interior Solid Block Study on Combined Convection Flow through Square Enclosure with a Hot Bottom Surface

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Author M. U. Ahammad, M. M. Rahman, M. L. Rahman, S. H. Mollah
ISSN 2225-7217
On Pages 167-174
Volume No. 4
Issue No. 3
Issue Date April 01, 2014
Publishing Date April 01, 2014
Keywords Solid block, combined convection, square enclosure, heat conduction, bottom surface



Abstract

The combined convective flow and heat transfer of steady laminar fluids through a square enclosure with a heated bottom wall along with an interior heat conducting solid block was examined by a numerical analysis using finite element method. The effects of centered block size was studied on flow and temperature field and heat transfer performance at a particular value of Hartmann number Ha = 10, Reynolds number Re = 100 and Prandtl number Pr = 0.71 for three convective regimes of mixed convection parameter Ri (namely 0.1, 1, 10). The cavity flow patterns represented by streamlines, temperature distribution inside the cavity represented by isotherms and rate of heat transfer at the hot bottom surface represented by average Nusselt number are exposed in the present article by graphs and tables. It is seen that the internal block configuration has a significant effect on the flow and transport characteristics. The results showed that as the size of inner solid body decreases the Nusselt number increases which is very consistent with physical significance.


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